Relier Pairs DC500 Test 2Version en ligne Error Causes and Prevention par Ricky Tuari 1 White Noise 2 Network Layer 3 Impulse Noise 4 Cross-Talk 5 Transport Layer 6 Attenuation 7 Echo 8 Inter modulation noise 9 Datalink Layer Cause: Poor connections (causing signal to be reflected back to the source) Prevention: Fix the connections, or tune equipment. TCP, UDP, DCCP,... 802.11, ATM, Ethernet, FDDI, PPP, L2TP,... Cause: Sudden increase in electricity Prevention: Shield or move the wires IPv4, IPv6, IPsec, ARP, RARP,... Cause: Signals from several circuits combine. Prevention: Move or shield the wires. Cause: Gradual decrease in signal over distance (weakening of a signal) Prevention: Use repeaters or amplifiers Cause: Movement of electrons (Thermal Energy) Prevention: Increase Signal Strength (Increase SNR) Cause: Multiplexer guard bands are too small or wires too close together. Prevention: Increase the guard bands or move or shield the wires.
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